AnswersCMS 2026-2027 Biology CREDIT RECOVERYThe History of Evolutionary Theory

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Which of these defines evolution?

A
a change in an animal's physical traits
B
a change in a population's gene pool
C
a change in an individual's genetic makeup
D
a change in environmental conditions
2
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According to natural selection, individuals that tend to survive are those that have which of these?

A
the longest legs and fastest running speeds
B
the largest and strongest body structures
C
the genetic variations that are best suited for their environment
D
the ability to quickly produce the most offspring
3

Which best describes evolutionary theory?

A
It states that organisms have become less complex over time.
B
It is based on the idea that all life is related.
C
It has been disproved several times since it was first proposed.
D
It is not supported by observation or experimentation.
4

The theory of evolution states that all life is related and that organisms have become more complex over time. Which phrase describes a theory?

A
the conclusion to a long-lasting debate
B
a fact that has been proven
C
the best explanation for a set of data and observations
D
an educated guess
5

Which best describes how the fossil record supports the theory of evolution?

A
The fossil record cannot accurately be dated.
B
The fossil record shows exactly how all species have evolved.
C
The fossil record reveals intermediates that link different species.
D
The fossil record refutes Charles Darwin's theories.
6

Which scientist is matched with his contribution to evolutionary theory?

A
Jean-Baptiste Lamarck—population growth
B
Charles Darwin—inheritance of acquired traits
C
Thomas Malthus—relationship of all living things
D
Erasmus Darwin—competition and sexual selection as an impetus for change
7

What did Jean-Baptiste Lamarck believe about traits such as large muscles that are acquired during one's lifetime?

A
They are the result of a change of alleles.
B
They are shared equally by all offspring.
C
They are acted on by natural selection.
D
They can be passed on to offspring.
8

Which scientist hypothesized that more offspring were born in a population than could survive based on limited resources?

A
Charles Darwin
B
Erasmus Darwin
C
Jean-Baptiste Lamarck
D
Thomas Malthus
9

Which example illustrates Charles Darwin's main contribution to the theory of evolution?

A
When exposed to antibiotics, most bacteria in a population die but some survive and live to reproduce.
B
An agricultural pest has been exposed to a pesticide that wipes out the entire species.
C
In the African savannah, a scientist observes that a wildebeest calf has inherited its coat pattern from its father.
D
In a laboratory, a scientist chooses the most intelligent mice and breeds them to advance the species.
10

Why was natural selection an important contribution to the theory of evolution?

A
It proved that evolution is true.
B
It summarized the process of evolution.
C
It highlighted the main points of evolution.
D
It explained how evolution works.

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